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SITE EVALUATION REPORT For Peterson Property <br /> Sewage Treatment System Page 2 <br /> GENERAL INFORMATION <br /> This design is for a Type 1,5 bedroom home and in accordance with the Minnesota Pollution Control <br /> Agency Standards and local ordinances. <br /> A seasonally high water table was evidenced at 14 inches of depth in Soil Borings 1 &2. The slope <br /> is about 6%. <br /> The soils at a depth of 12 inches in Test Hole 4 has a percolation rate of 17 minutes per inch. All <br /> neighboring wells are located more than 100 feet away from the proposed treatment area. <br /> NOTES: <br /> Keep all heavy equipment off the proposed treatment area before and after construction as much as <br /> possible. The treatment area should be marked off before construction. <br /> With proper installation and maintenance this system should have no problem in treating septic <br /> effluent effectively. <br /> This design will require an ejector pump. <br /> It is recommended that the septic tanks be pumped every 2 years. <br /> MOUND SYSTEM: <br /> Flow: 5 bedroom= 150 gallon/day/bedroom 150 x 5 = 750 gallons per day . <br /> 750 GPD x 1.00= 750 square feet. <br /> 10 foot wide rock bed 75 feet long= 750 square feet <br /> CONSTRUCTION EQUIPMENT: <br /> A rubber-tired tractor may be used for plowing or disking to prepare the soil surface but in no case <br /> shall a rubber-tired tractor be used after the surface preparation is completed. A crawler or tract-type <br /> tractor shall be used for mound construction. <br /> $OIL SURFACE PREPARATION: <br /> The discharge pipe from the pump to the mound area shall be installed prior to soil surface <br /> preparation. The trench excavated to install the discharge pipe shall be carefully backfilled and <br /> compacted to prevent seepage of effluent. <br /> The total area selected for the mound, including that under the dikes, shall be roughened in order to <br /> thoroughly break up any existing sod layers and to provide a suitable transition zone between the <br /> original soil and sand layer of the mound. The area shall be roughened only when the moisture <br /> content of the soil 8 inches below the surface is drier than the plastic limit. <br /> Surface preparation or roughening may be performed with a mold board plow, a disk plow, or a back <br /> hoe using only the teeth. Mold board plow furrows shall be at least 8 inches deep, shall be thrown <br />